Transverse and Longitudinal Waves

1
Daily Work Organizer
Friday Question of the Day What do waves transfer? How do you identify transverse and longitudinal waves? Question of the Day What do waves transfer? How do you identify transverse and longitudinal waves?
Do Now What are things that travel by wave? What do waves have to do with energy? Do Now What are things that travel by wave? What do waves have to do with energy? Do Now What are things that travel by wave? What do waves have to do with energy?
Agenda Agenda Homework
Homework Reading Log 14 pg 122-124 Test
Corrections Survey Finish worksheets
2
Jobs

• PowerPoint Master
• 2 Fantastic Student to handback Homework
• Whiteboard eraser!

3
Waves
4
Why do we care?

• Waves are all around us all the time, even if we
  cant see them.

Waves not only explain surfing, but they also
explain earthquakes, sound, and one of the most
mysterious phenomena on Earth-light
5
What do Waves Do?

• Move energy through matter or space

6
Two Types of Waves

• Mechanical Waves need matter (medium) to travel
  through
• Electromagnetic Waves can travel through empty
  space

7
Mechanical Waves
Mechanical waves travel through mediums such as
water
air
solids
8
Mechanical Waves

• May be longitudinal
• Or transverse

9
Types of Mechanical Waves

• Transverse Waves energy moves up and down or
  side to side while traveling forward

Amplitude
Wavelength
Crest
Trough
How often Frequency
10
Types of Mechanical Waves

• Longitudinal/Compression Waves energy moves
  along the medium while traveling forward

Wavelength
How often Frequency
11
Types of Waves
http//www.youtube.com/watch?vRbuhdo0AZDU
12
Mechanical Waves

• Transverse

• Longitudinal

• Has wavelength, frequency, and amplitude
• Energy travels forward but moves up and down/side
  to side

• Has wavelength and frequency
• Energy travels forward in pulses

13
Put the following waves under the correct
category

• A wave at a ball game
• Guitar string
• Slinky
• Flag waving in the wind
• Sound wave
• Shaking a rope
• Water wave

14
II. Mechanical Waves

• Longitudinal

• Transverse

• Slinky
• Sound wave
• Water wave

• A wave at a ball game
• Guitar string
• Flag waving in the wind
• Shaking a rope
• Water wave

15
Electromagnetic Waves Light!
16
Example 1
3 m
2
2 m
3 m
v f ?
v 1.5 m/s
17
GUESS FORMULA

• G Givens - write them all down with symbols,
  numbers and units
• U Unknown - write down the unknown with a
  question mark
• E Equation - write down the equation or
  equations that apply in the problem solve the
  equation(s) for the desired unknown
• S Substitute - substitute the given information
  into the solved equation
• S Solve - solve numerically, paying attention
  to units identify the final answer by circling,
  boxing, or underlining it clearly check the final
  answer to be sure it makes sense